The following the text

Next take a look at the moss green colored spots

on the map on the precedent text, please.

***

The area covered with the moss green colored spots

had been well developed in Old Stone age in Japan.

There was much high quality sand

to produce iron weapon in the district.

There had been numbers of Bronze bell-shaped vessel.

Some of them are admitted as what are national treasures.

***

Admirable !  I can't immediately find any longer word to express.